Supplemental Cash Flow Information - Schedule of Noncash Investing and Financing Activities (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Supplemental Cash Flow Elements [Abstract]
Accrued liabilities for purchases of property, plant and equipment	$ 63.1	$ 27.3
Remeasurement of operating lease right-of-use assets	1.4	(3.5)
Remeasurement of finance lease right-of-use assets	0.0	(6.4)
Right-of-use assets obtained in exchange for new operating lease liabilities	28.6	13.0
Right-of-use assets obtained in exchange for new finance lease liabilities	16.3	7.0
Acquisition of assets through asset exchange	$ 5.2	$ 0.0